Heat-resistant paint for furnaces and fireplaces

Paint is heat-resistant for furnaces is a composition that is designed to protect the surface from the effects of high temperatures. Among other things, after applying it, the surface is protected from steam, moisture, temperature changes, corrosion processes.

Characteristics of heat-resistant paint

The heat-resistant paint for furnaces, depending on the quality characteristics, is able to cope with the effects of temperatures, which reach a value of 1250 degrees Celsius. It is most convenient to use the one that is produced in the form of an aerosol. Such compositions are very economical, since they are applied in a thin layer. In addition, after application, they dry very quickly. Not all heat-resistant paints are produced in aerosol version. In this form, mixtures are made, based on alkyd siliconeized resins, fillers in the form of aluminum or marble powder, as well as minerals. In addition, among the ingredients of such formulations, anti-corrosion additives and pigments are used. Distillates of oil, butane and propane are used as a solvent, which is what causes rapid drying.

Paint is heat-resistant for furnaces, in which acrylic, has one significant advantage, which is expressed in improved adhesion properties with copper, steel, lead, galvanized, aluminum, brass bases.

Different brands of heat-resistant paints for metal in the form of an aerosol are designed for temperatures from 400 to 700 degrees Celsius. It is possible to apply such compounds without the use of a primer, but the surface must first be cleaned of debris and rust.

The paint is heat-resistant for furnaces perfectly copes with the effect of oils, salts and gasoline. It is not necessary to use such compounds on the surfaces of the furnaces, which will undergo constant friction.

Additional features of heat-resistant aerosol paints

The most popular colors of heat-resistant paints are black and silver. But on sale you can find many other shades. It is necessary to remember before purchasing that the heat-resistant compound does not possess the qualities of confrontation with fire. For this it is necessary to use special compounds.

Technology of using heat-resistant paint in the form of an aerosol

Aerosol heat-resistant paints for furnaces and fireplaces should be used according to a special technology, which requires the application of 2-3 layers. It is quite easy to use such mixtures, before use, the balloon should be shaken well. The application should be made at a distance from the surface of 20-30 cm. It is permissible to proceed to the spraying of the next layer not earlier than two hours later. If you intend to use a different kind of heat-resistant paint, for example oil, in your work, then it is ready to use, the main thing is to mix the composition well before starting the work, this will allow to distribute the dispersed particles that lie at the base of the suspension in composition.

Surface preparation before application of other varieties of heat-resistant paints

A heat-resistant paint for an oven, the price of which can be different, should only be applied to a previously prepared surface. Before acquiring the composition, it is necessary to determine how much is needed for the work. So, for 1 kg of paint will have to pay about 200 rubles. The consumption of the composition is prescribed by a certain manufacturer on the package. Before starting work, the substrate should be thoroughly cleaned of dust and debris, and after degreasing. This will give an even coating. In addition, it is necessary to check whether the surface is completely dry.

The paint for metal furnaces is heat resistant and should be applied only when it is possible to get rid of the old coating. However, this kind of preparation can not be made if the old coating is sufficiently strong. Use a surface without preparation, which involves the removal of the old coating, is permissible if the destruction of the paint does not exceed 20%. If there are any such errors, then we can apply the preparation method, which provides for partial processing.

Partial surface preparation

A heat-resistant paint for a metal furnace can be applied to the surface if it has a partial destruction of the old coating, only after these places and the area around by 30 cm are carefully protected. Before use, the liquid must be mixed, and if necessary, dissolution can be carried out using xylene.

Paint Application Features

The composition can be applied at any temperature, however, as in the case of aerosol, such formulations can not be used on a wet surface. It is inadmissible to apply the mixture even if there is frost on the base. Depending on the external conditions, the paint can dry for half an hour, but this period can be extended to 3 hours. The complete drying will occur with heating to 150 ° C. For faster work, a pneumatic spraying method should be used. One approach is 17 seconds.

If the work uses a varnish for a brick structure, then the thickness of the first layer should be equal to 40-80 microns. If the first layer is too thin, then one can be applied. Its thickness should be equal to 40 microns. The application of each subsequent layer can not be made if the previous one has not dried out. It is necessary to make the layers as thin as possible. Seams between the masonry should be painted in light colors. If the masonry of the structure is not very high-quality material, then the surface must be plastered beforehand using a calc-clay composition.

Such work can easily be done on your own, just do not choose a paint with an excessively high resistance, which does not match the performance characteristics of the furnace or fireplace, because in this case, the acquisition will not be appropriate.